Dishwashing machine



y 1936. H. c. CARTER I 2,046,311

DISHWASHING MACHINE Filed Au 4, 1934 H. cl. CART En ma,

,; 15 flTTUR/VEV mu/v 7-023;

Patented July 7, 1936 UNITED STATES PATENT OFFICE -8 Claims.

This invention relates generally to washing machines, and particularly to a dish washing machine. I

The main-object of this invention is the construction of an exceedingly simple and eflicient form of dish washing machine which can be fabricated at a relatively low cost.

The second .object is to produce a machine which will wash dishes efllciently in a. minimum amount of time without the exercise of skill on thepart of the operator. I

The third object is to so construct'the dish washer that it can be used in conjunction with the ordinary kitchen sink and that the dishes can be placed therein in an economical manner and that a lateral surging action will be made to take place parallel to the lines in which the plates and flat dishes are set within the washer.

The fourth object is to so construct the washer that the outlets for the air line are so disposed as to prevent their. interfering with the normal operation of the machine, and at the same time to serve as handles for the machine.

These, and other objects, will become more apparent from the specification following as illustrated in the accompanying drawing, in which:

Fig. 1 is a longitudinal section device. a v

Fig. 2 is a perspective view looking upwardly into the dish container.

Fig. 3 is a vertical section taken along the line 3-3 in Fig. 1.

Similar numbers of reference refer to similar parts throughout the views.

Referring in detail to the drawing, there is shown a bottomless container consisting of the front and rear walls l0 and II, the horizontal top l2 and the sloping top side portions l3 and H, the f6rmer of which is provided with a transparency IS. The end walls l6 are provided on their lower e'dgeswith rubber feet llwhich rest upon the sink bottom I8. The wallsv Ill and II, however, do not extend to the sink bottom 18 through the cut their lower edges-l9 are raised above same.

Within the top I2 is formed a dome 2Q at the upper end of which is disposed a fan chamber 2| which communicates with the dome 20 by means of the opening 22, and the body ofthe container communicates directly with the interior of the dome 20. Within the fan chamber 2| is mounted a fan 23 which is-driven by an electric motor 24 mounted on the top side of the dome 20.

The fan chamber 2| communicates'by way of the openings 25 with the air outlet ducts 26 whose outlet ends 26A also serveas handles by means of which the entire container can be placed in the sink or removed therefrom.

It will be noted that the outlets 26-A are on the opposite ends l6 which extend to the sink bottom l8. This is very important, as to place these outlets on the open side of the container III or II would interfere with the operation of the device. This is due to the fact. that since a high velocity is imparted to the airby the fan 23, to discharge it toward the front or back edges l9 would drive the water away from this portion of the container, while'by discharging the air toward the bottom of the ends IS the water is driven toward the edges I9.

Within the container is disposed a wire frame basket 21 having pockets formed between the wires 28 which are parallel to the end walls l6. These pockets are adapted to receive plates or fiat dishes 29. Silverware 30 is disposed in an end section especially provided therefor and preferably lined with a screen 3|. The end members 32 of the basket 21 are quite close to the container ends l6 and are sufficiently high to form a support for the tray 33 especially adapted to receive cups 34 and glassware '35.

The operation of the device is as follows: Assuming that a suitable supply of cleansing compound and water 36 have been placed in the sink 3! and that they dishes have been placed within the basket 21 and tray 33 and that the container is placed in the position shown in Figs. 1 and 2, the motor 24 is now started causing air to be drawn up through the opening 22 and discharged from the outlets 26A.

What actually transpires is this: The water 3E is drawn up into the container until the seal is broken at one side or the other of the container. Assuming that it is first broken at the bottom of the rear wall II, the water and air rush up in the general direction indicated by the arrows 38, causing an accumulation to take place at the rear of-the wall ll underwhich it entered the container. The-continued operationof the fan will again cause the water to rise and the seal to break under the front wall Ill before the excessive water behind the rear wall H has a chance to return to its natural level. The reason the water breaks first under the wall ill or the wall I I is because it is almost impossible to have a perfect balance of levels between the edges I3. Also, the position of the dishes and the action of the air discharging through the outlets 26A and dishes 29,'an'd up, under and around the dishes within the tray 33.

Attention is drawn to Patent No. 1,983,931, over which this device is an improvement.

It will be noted in Fig. 3 that the end walls i6 extend to the sink engaging line approximately to the point where the curvature of the corners. 39 begins, that is, where the curves 3! are tangent to the sides It. The exact points, however, where the lowermost part of each wall It ends is dependent vupon several factors, namely.

the proportion of the various container dimensions, the distance between the lowermost edges i8 and the sink bottom It, the capacity of the fan 23, the amount of water used and other factors, it being mainly important that the lateral seals on the under edge of the container are more easily broken than are the end walls, in order that the desired surging action resulting therefrom be normal tothe sides I and Ii and as nearly as possible uniform along the entire length of the container. l

I claim:

, 1. A dish washer comprising a kitchen sink-in combination with an elongated rectangular container having a completely open under side, the bottom edges of the opposite longer sides of the container being spaced from the bottom of the sink and being higher than are the opposite bottom edges of the shorter sides of the container, and means for exhausting air from the upper end of the container which is otherwise closed and discharging same downwardly along the outer sides of the shorter sides.

2. A dish washer comprising a kitchen sink in combination with an elongated rectangular container having a completely open bottom and a closed top, the upper portions of whose longitudinal sides slope inwardly in a manner to make the upper portion of the container narrower than the bottom thereof, means for exhausting air from the closed upper portion of the containe and rubber feet'extending along the shorter sides for supporting said container so that the two oppositelongersidesthereofareheldinspaoed relation from the bottom of the sink while the opposite shorter edgesform the support for the container. Y

3. A container for dish washers consisting of s an elongated box structure having a completely open under side and having the under edges of the elongated side walls at a higher elevation than thecorresponding edges-of the shorter end walls, and means for evacuating air from the up- 10 per portion of the box structure.

4. The combination of a sink with the container described in claim 3 in combination with a dish holding basket in said sink over which the container extends, said basket having means for holding flat dishes in substantial parallelismwith the shorter ends of the container.

5. A container for dish vhshing machines consisting of an open bottom rectangular box having one pair of opposite sides forming a support therefor andthe other pair of sides having their lower edges spaced from the supporting surface, means for evacuating air from the top side of the box, and ducts for returning the evacuated air downwardly along the outer sides of the box supporting sides. I

- 6. The combination of a sink including the container described in claim 5 with a dish holding basket in the bottom of the sink within the container, said basket having compartments for holding flat pieces in parallelism with the supporting walls of the box, and having a tray for supporting cups in an inverted position and elongated tumblers with their mouth ends below their opposite ends. 7

7. Adishwashercomprisingakitchen sinkin combination with an elongated rectangular container having a completely open imder side, the bottom edges of the opposite longer sides of the container being spaced from the bottom of the sink and being higher than'the opposite bottom edges of the shorter sides of the container, the length of the sink enga in portions of the shorter sidesbeingless thanthe distance between the longer sides and means for exhausting air from the upper portion of said container.

8. The washer described in claim '1 characterized by having the means for drawing air from said container discharging downwardly 3 8 the shorter ends thereof above the lower edge of the container.

HABKELL C. CARTER. 

